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JSON Key Sorter

Sort object keys alphabetically at every depth, with an option to preserve array order.

Sort JSON keys

Sorted: —
Every object is rebuilt in alphabetical order at every depth, and array items keep their positions unless you untick the option.

How to use the JSON Key Sorter

  1. Paste the JSON document whose keys need sorting.
  2. Choose the indentation and whether arrays keep their order.
  3. Press Sort keys, then copy the rebuilt document.

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Frequently Asked Questions

Common questions about the free online json key sorter.

Paste the document and press Sort keys. Every object is rebuilt in alphabetical order while values stay attached to their keys.
Yes. Sorting is applied recursively, so objects inside objects and inside arrays are all rebuilt in alphabetical order.
When ticked, array items keep their original positions, which matters for lists where order carries meaning.
Array items are then sorted by their serialised text, which is handy when you want a fully deterministic document.
Yes. Choose the minified indentation option to remove all whitespace, or pick two or four spaces for readable output.
Sorted keys make diffs stable, output reproducible and payloads easier to scan when they are compared across systems.
No. The document is parsed and rebuilt locally in your browser, so nothing you paste is transmitted anywhere.
No. Only the order of object keys changes, and values keep their exact types, numbers and text.
Yes. The sorter is completely free, unlimited and needs no account or sign-up.

Last updated: October 10, 2026